Car-wheel.



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THEODOREL. HAWKINYS, OF PITTSBURG, PENNSYLVANIA.

.CAR-WHEEL.

Specification of Letters Patent.

Patented March 12, 1907.

Application med-April 11, 1906. serial No. 311,066.

The inventlon relates to railroad and min- I* ing cars having the wheel mounted to rotate loosely on the axles.

The invention consists of novel features and parts and combinations of the same,

i -which will be more fully described hereinafter and then pointed out in the claims.

A practical -embodiment of the invention is represented in the accompanying drawings,

forming .a part of this specification, in which similar characters of reference indicate corresponding partsin all the views.

Figure 1- is.. a' transverse section of theiml provement as'applied. Fig. 2 is a sectional side elevation of the same on the line 2 2 of Fig. 1. Fig. 3 is a similar view of the same on the line 3 3 of Fig. 1. Fig. 4 is a face view of the end-thrust ball-bearing, and Fig. 5 is a cross-section of a modified form of the improvement.-

The journal A of the car-axle A extends through the pedestal B, secured in the usual manner to the body C of a car, and the said journal A also extendsthrough a-jbushing D, secured in the hub E" ofae'ar-wheel E. The outer end E2 of the hub Eis closed,`and the forward end of the journal A projects beyond the outer end of the bushing D and into the closed end E2 of the hub E', -as plainly indicated in Fig. 1. In this outer end E2 of the hub is formed an interior annu'- lar recess E3, in .register with an annular recess A2, formed on the peri heral surface of the' journal A and the sald registering recesses E3 A2 arefilled with balls F, so as to hold the hub E against longitudinal movement on the journal A of the axle. A screw-plug G screws in the hub E at the recess E3 to permit of placing the balls F in position in the said recesses when assembling the several parts.

Within the hub El is formed an annulararecess E, surrounding a portion of the bushing D, so as to form with'the latter an'oil-well for containing oil or other suitable lubricant.

In the bushing D are formedl a number of apertures Dl for conductin i the lubricant 55 from the oil-well to the perip eral surface of the journal A to keep the bearing parts well lubricated. As shown in Figs. 1 and 2, the

hub E is provided inside of the recess' E4 Y with radial partitions E5, extending ,with their inner ends within a short distance of the peripheral surface of the bushing-D, and these partitions E5- servejto'* retain solid- Y', grease or other lubricantwithin'theoilwell when assembling the parts,` the grease meltff ing as soon as the workingpartsbeco'me heated when the car is in use. i

A filling screw-plu H screws in the hub E to allow of filling t el oilewell, Ieriodically` 7295 with the necessary oils '.Qne of t 'e openings D in the bushing D -ispi'ovided with anaper-i I;

ture-retaining plug* 1.,extending into .the re. i

cessE and resting on one of the partitions E5 f l j adjacent to the inner end wall v'ofthe-recess E, so as to prevent longitudinal movement 7' 5 of the bushin D in the hub E 'lhe inner l end of the bus ng D is provided with a head D2, fitting into a recess B', formed on the outer end of the pedestal B, so as to render the device comparatively dustproof, and, if desired, an end-thrust ball-bearing J may be placed between the face ofthe head D2 and the wall of the recess B to-takeup all end thrusts. As shown in Fig. 5, this end-thrust bearing J is omitted, and in this case the head` 8. 5 D2 fits snugly in therecess B of the pedestal B. 'Ihe outer surface of the bushing D adjacent to the head D2 is preferably provided with ribs D3, fitting corresponding recesses in the inner end of the hubE to assist in holding the bushing D from'turning in the hub E. An interior annular recess B2 is formed adjacent to the inner end of the pedestal B, and,v this recess is filled .with cotton or other suitable material to retain the oil on---the journal 95 A', and consequently within the pedestal B and the bushing D; Y

By the arrangement shown'and described the several parts can be readily assembled, and by the use of the balls F, engagin .the recesses in both the journal A and theub E 'the car-wheel A is held against longitudinal movement on the journal andiwithout unduev friction or binding-of the parts. In case the journal A and the bushing D become Worn to zo 5 a considerable extent then it is only necessaryto replace the worn-out bushingD by a new one, so that both the axle as Well as the car-Wheel A can be used.

Having thus described my' invention, I claim as new and desire to secure by Letters Patent- 1. The combination of a pedestal with a car-Wheel, a bushing for the Wheel, and an axle-j ournal extending through the said pedestal into the said bushing, said pedestal hav'- ing a recess for receiving the bushing.

2. The combination of a pedestal having a bearing for an axle-journal and provided l with an annular recess, a oar-Wheel, a bush- 15 ing for the Wheel extending into the recess of i the pedestal, and an'axleha-vingfits journal extending through the said pedestal-bearing and the said bushing. l

3. The combination of a pedestal having a bearing and an annular'recess at its outer 2o end, a car-Wheel, a bushing in the hub thereof, the inner end of which bushing is provided with a head fitting the said pedestal-recess.

In testimony whereof I have signed my name to this specification in the presence of 25 two subscribing witnesses.

- THEODORE L. HAWKINS.

Witnesses: A

THOMAS W. COHILL, THOMAS G. HUILsToN. 

